That was fun, loved the first comment in the homemade video, "don't use powder, use spiders" THAT is LOL!
Still think the wireless keychain is so baller.
But watching the homemade video reminded me of a few past projects, wanted to pass a tip along to you.
MAKE SURE you triple check all switches and connections BEFORE you start gluing/taping/heatshrinking what have you.
And even with "simple" projects like this, it's still a really good idea to wear safety glasses (yes my Dad was a shop teacher) during the entire process. I willing to bet, for sure, that every old fart tinkerer on here as had something fly up into his face.
Wait... that sounded weird.